#define _CRT_SECURE_NO_WARNINGS
#include<iostream>

class Date
{
public:
	Date(int year = 1, int month = 1, int day = 1)
	{
		_year = year;
		_month = month;
		_day = day;
	}
private:
	int _year = 0;
	int _month = 0;
	int _day = 0;
};

int main()
{
	Date d1;

	return 0;
}